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I have not found any rust so far, then again I have not jacked it up and done any serious poking yet either.
If I had a smaller diameter tube it may well snake on down and pull out the bad petrochemical brew formally known as "Gas"... I have not yet had the heart to smell it either.
I picked up a simple fuel transfer pump from Harbor Freight to drain fuel out of my 911 when I realized my occasional use of sea foam or Berryman's B12 had boiled the paint coating off my fill tube.
It worked perfectly but is designed to have the bottom submerged in fuel, easy if you remove the sending unit and drop it straight in the tank on a 911.
Obviously no such access on the quaalude, er Prelude.